#include<stdio.h>

int main()
{
 	float a,b,t;
 	scanf("%f%f",&a,&b);
 	if(a>b)
 	{
 		t=a;
 		a=b;
 		b=t;
	}
	printf("%5.2f,%5.2f\n",a,b);
 	return 0;
}

